HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

The old bugs have returned, by the way.

HD_CRASH_LOG.TXT (8.7 KB, 2 views)
LKnight.zip (145.9 KB, 1 view)

Thank you. I figured it out.
You should already be added to the list of those who deserve thanks, as the most resourceful and helpful tester.)

Regarding a couple of save files – I also figured it out.
This is a bug in the original game.

The trick with the sequence is that
in DUNGEON there is a dungeon; the first hero stands in the dungeon, and when loading, the underground level is activated.
and in the AUTOSAVE file, there is no dungeon.
the bug is that when loading the game, for some reason, the necessary coordinates are not reset in the adventure manager.
and when loading AUTOSAVE after loading DUNGEON, the game refers to an object on the map in the underground level, which does not exist in AUTOSAVE.

To confirm this, just switch to the upper level after loading DUNGEON, and then loading AUTOSAVE will not crash the game.

In general, the game has a function that checks whether the coordinates responsible for the crash are within the map (which should theoretically prevent this crash), but this function only checks the validity of x and y coordinates, and does not check the z coordinate.

Why, even with this load sequence, the game still crashes intermittently, because the non-existent coordinates do not always fall into the forbidden memory area.
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Both bugs will be fixed in the next version